Conductor-pipe machine.



No. 845,437. PATENTED FEB. 26

S, M. SCHMELTZER.

CONDUCTOR PIPE MACHINE.

APPLICATION FILED JAN. 18. 1906.

3 SHEETS-SHEET l.

31 mentor,

v PATENTED FEB. 26, 1907. S. M. SGHMELTZER.

CONDUCTOR PIPE MACHINE.

APPLICATION FILED JAN.18. 1906.

3 SHEETS-SHEET 2 Same-atom No. 845,437. PATENTED FEB. 26, 1907. s. M. SGHMELTZBR. CONDUCTOR PIPE MACHINE.

APPLICATION FILED JAN. 18. 1906.

31 we n lfoz af'ioznu 3 SHEETS-SHEET 3.

'ririrrnn srnriis Parana. oriuon.

doNDucToR-PaPE MACHINE.

Specification of Letters Patent.

Patented. Feb. ac, 1907.

Application filed January 18,1906. Serial No. 296,619.

To (all whom, it may concern:

llO

-the pipe when desired, and to crimp the end thereof, all in continuous or successive operations by one machine. These objects and other desirable results are attained by the mechanism, construction, and arrangement illustrated in the accompanying drawings, in which Figure 1 is a plan view of theconductorpipe maehine; Fig. 2, a right side elevation of the machine; Fig. 3, a longitudinal section on line 2 2, Fig. 1; Fig. 4, a perspective view of the'forward end of the machine, showing details of the crimping mechanism; Fig. 5, a

front elevation of the crimping-head; Fig' 6,

a detached perspective view of one crimping.

or corrugating roll Fig. 7, a similar view of one section of the crimping-head or corrugatinghead face-plate; Fig. 8, a similar view showing details of the corrugating-head; Fig. 9, a cross-section of an edged sheet; Fig. 10,

an elevation of the initial rolls; Fig. 11, an

elevation of the intermediate rolls; Fig. 12,

- an elevation of the final rolls; Fig. 13, a side view of the crimping clutch-gear; Fig. 14, a plan view of the same; Fig. 15, a face view of the same, and Fig. 16 a detached view of the crimping trip-arm.

Similar .numerals refer to similar parts throughout the drawings.

The metal sheets 1 are out into strips of uit bl length and width, and the flanges 2,

and 2 are bent in reverse directions, as'

shown in Fig. 9, which bending may be done in the usual manner by an edging-machine,

and when by a sheet-metal edger of the type illustrated and described in Letters Patent No. 683,996, issued October 8, 1901, to this inventor the same can be connected or joined to.the pipe-making machine and operated continuously therewith; but for simplicity an edging-machine is not shown in'this case. I The parts of the pipe-machine proper are prefers. ly' mounted on the single frame 3 and comprise ingeneral the initial rolls 4 and 4;, the intermediate rolls-5 and 5 the final rolls 6 and 6 the mandrel 7, the groovingrolls 8 and 8 the feed-rolls 9 and 9 and 10 and 10*, the corrugating-head 11, and the crimping-head 12, and the various rolls are actuated by suitable counter shafts and gears from the main shaft 13, preferably mounted longitudinally on the side of the machine.

The initial dies are preferably, as illustrated, the rolls 4 and which are horizontally disposed on transverse axes and are formed to bend or concave the lateral parts of the metal sheet approximately in the form required in the finished pipe and to bend or convex the middle portion of the sheet in a curve opposite to that of the finished pipe, as illustrated in Fig. 10. The intermediate dies, preferably the rolls 5 and 5*, are located at an interval in front of the initial rolls and are likewise horizontally disposed on transverse axes and are formed to bend or concave the middle part of the sheet in the form re quired for the finishedpipe, and in this oper-.

ation the flanges on the end of the concave roll 5 slightly overlap the sides of the convex roll 5*,which overlapping acts to force and spring the flanged edges of the concaved side parts of the metal sheet against the ends of the convex roll 5*, as shown by full lines in Fig. 1 1, so that when the sheet has passed beyond the intermediate rolls the flanged edges thereof will spring inward quite close to-' gether, as shown by broken lines in the same figure. In this manner the partly-formed pipe is fed over the rear end of the mandrel 7, which is located at an interval in front of the intermediate rolls, 7 the flanged edges of the pipe separating and passing on the sides of the pendent support 14 of the mandrel and then on between the final dies, preferably the rolls 6 and 6, which are mounted on vertical axes, one on each side of the mandrel at an interval in front of the rear end thereof.

The final roll 6 is concave in its vertical.

section, so as to fit approximately around the adjacent half of the mandrel, whereby the corresponding half of the pipe is pressed and held substantially in its ultimate semicircular shape, and the flanged edge 2 thereof is pressed down close to the top of the mandrel, While the final roll 6 on the oppositeside of the mandrel is moreflatly concaved in the upper part of its vertical section, so that the corresponding flanged edge 2 of the pipe is IIO forced over and above the opposing flanged edge 2, which brings these flanges in proper position for being engaged and locked to form the seam, as shown in Fig. 12. The pipe thus formed is then fed forward along the mandrel, and the flanged edges are engaged and locked by means of the ordinary adjustable grooving-roll 8, opposite which is mounted, the companion roll 8 in the longitudinal slot in the mandrel, which companion roll serves to eliminate the friction which would result if the grooving-roll pressed directly against the mandrel. The pipe thus completely formed and grooved is then passed forward along the mandrel, and its movement is made positive by means of the adjustable feed-rolls 9 and 10, preferably located one below and the other above the mandrel, and the pressure of these rolls is sustained by the antifriction companion rolls 9'' and 10*, which are mounted, respectively, in the slots 16 and 17 in the mandrel. These feed-rolls also serve to support the mandrel in its proper position.

The forward part of the mandrel is provided with the longitudinal laterally-rounded grooves 18, and the forward end 19 thereof is tapered to terminate in a reduced crosssection. The corrugating-head 11 and the crimping-head 12 are located around the mandrel, the former preferably between two feed-rolls and the latter around the forward reduced end of the mandrel. These heads are substantially alike except in theiroperating mechanism, and one description will serve for both. r I

The annular groove 20 is formed in the face of each head between the annular flanges 21 and '21, and in this groove is rotatably located the adjusting-ring 22, having therein the series of inclined slots 23. The series of radial slides 24 with beveled sides 25 are held in position against the faces of the respective heads by means of the sectional face-plates 26, having their edges 27 reverse y beveled, which plate-sections may be fastened to the annular flanges of the heads by means of the screws .28. On the inner face of each radial slide is provided the pin 29, and the pins of'the several slides enter and operate in the inclined slots of the adjustingring, by means of which slots and pins the slides areadjusted outward and inward in unison by the rotation of the adjusting-ring one way or the other. On the inner ends'of the slides are mounted the corrugating or crimping1 dies, which, as illustrated, are preferab y t e rounded rollers 30, which register with the rounded grooves in the mandrel,

and by means of these rollers the pipe may be corrugated by the corrugating-head and crimped by the crimping-head.

The adjusting ring in the corrugatinghead is provided with a handle 31, extending prefera ly upward through the slot 32 in the annular flange 21- of the head, by means of which handle the adjusting-head is rotated to throw the corrugating-rolls to and from the mandrel, and the ring is held in various positions of adjustment by means of the ratchet 33 on the periphery of the head and'& detent 34 on the handle of the ring, and the adjusting-ring of the crimping-head is provided with the arm 35, extending preferably downward through the slot'36 in the annular flange 21. of the head, and by means of this arm and ring the crimping-rolls are adjusted to and from the mandrel by the rotation of the cam-disks 37 and 37 in the slot 38, between which disks the free end of the arm is entered.

The trip-arm'39 is pivoted adjacent to the mandrel at a point a short distance to the rear of the crimping-head, and the inner'end of this arm extends and operates in the longitudinal slots 40 in-the side of the mandrel. In the outer end of the trip-arm is mounted the telescoping bolt 41, which is normally forced outward by the spring 42, and the' outer end of the bolt is beveled to present the forward inclined face 43. The clutch-lever 44 is pivoted on the side of the frame, and the forward side of its upper free end .is normally engaged by the bolt on the end of the trip-arm, and the outer end of the trip-armis normally drawn forward by means of the spring 45, attached to the crimping-head. As theforward end of the pipe approaches the crimping-head it carries the inner end of the trip-arm forward, which throws the outer end thereof backward, which in turn throws the upper end of the clutch-lever backward until the bolt is free to pass inside the lever, whereupon the upper end of the clutch-lever is free to move to its normal forward position, which it does by action of the spring 46,

and after the pipe is assed beyond the inner end of the trip-arm t e same is permitted to return to its normal position, and in so doing the telescoping bolt in its outer end passes inside the upper end of the clutch-lever,. which it does y reason of its beveled end, after, which the bolt-spring forces it out in frbnt of the clutch-lever ready for another action.

' i The cam-disks 37 and 37" are arranged to make one revolution on their shaft 47 each time the clutch-lever is trip ed by means of the clutch-gear-wheel 48, which is rotatably mounted onthe disk shaft. The clutchhead 49 is securely attached on the shaft ad- ICO IIO

head and detent-plate and by forcing the lat-'1 ter outward thus disengages the detentin from the apertures in the gear-wheel; ut

when the clutch-lever is tripped the wedge flange is thrown out and the gear-wheel is engaged by the detent-pin until the diskshaft' has made one revolution, whereupon the wedge flange of the clutch-lever, having by action of the spring 46, forces out the detent-plate, and thus disengages the clutch-pin. 'lhe cam-slot 38 is so shaped that the crimping-rolls are normally held outward free from the formed pipe, but that when the l crimping mechanism has been tripped and the torward end of the pipe has been advanced to the forward reduced endof the mandrel the crimping-rolls are thrown inward to crimp the end of the pipe on the small end of the mandrel, after which the crimping-rolls are gradually moved outward, so as to give the crimp on the end of the pipe the desired length and taper. These movements of the crimping-rolls are accomplished by means of the crimping-lever as it is thrown one way and the other by the rotation of the cam-disks, one such revolution being made'when the mechanism is tripped by each pipe.

It will be understood that by makingthe pipe in the manner described, that is, by first concaving the lateral parts of the metal sheet in approximately the proper ultimate form and convexing the median part of the metal sheet in the opposite direction, when this median part is then concaved in approximately its ultimate form the lateral parts are thrown upward and inward to approximately their ultimate proper position, so that the partly-formed pipe is in verytconw velrliient shape for entering between the final r0 s.

This process of making the pipe which has been described and illustrated, but not claimed herein is made the subject of another application forLetters Patent, filed January 31, 1907, Serial No. 355,028. What I claim as my invention, and desire to secure by Letters Patent, is

1. A sheet-'metal-pipe machine comprising initial, intermediate and final dies with a mandrel between the final dies; the initial dies being shaped to concave the lateral parts and convex the median part of the sheet, the intermediate dies being shaped to concave said median part of the sheet, and the final dies being shaped to form the pipe around the mandrel and bring the flanged edges of the sheet in relation for grooving.

2. A sheet-metal-pipe machine comprising initial, intermediate and final rolls with a mandrel between the final rolls; the initial rolls being shaped to concave the lateral parts and convex the median part of the been drawn back toward its normal position sheet, the intermediate rolls being shaped to concave said median part of the sheet, and the final rolls being shaped to form the pipe around the mandrel and bring the flanged edges of the sheet in relation for grooving.

3. In a sheet-metal-pipe machine a mandrel having longitudinal grooves therein, a head around the mandrel having radial slides therein with dies on their inner ends, a rotatable ringin the head having inclined slots therein, and pins inthe slides entered in the slots whereby the dies can be radially adjusted in unison by the rotation ofthering.

4. In a'sheet-metal-pipe machine a mandrel having longitudinal grooves therein, a head around the mandrel. having radial slides therein with rolls on their inner ends, a

rotatable ring in the head having inclined slots therein, and pins in the slides entered in the slots whereby the rolls can be radially adjusted in unison by the rotation of the ring.

5. In a conductor-pipe machine a mandrel having a tapered end, a head around the tatherein, and mechanism tripped by the forward end of the pipe whereby the dies are moved inward when the end of the pipe is at the small end of the mandrel and then outward as the pipe advances.

6. In a conductor-pipe machine a mandrel having a tapered end, a head -around the tapered end having radially-adjustable rolls therein, and mechanism tripped by the forward end of the pipe whereby the rolls'are moved inward when the end of the pipe is at the small end of the mandrel and then outward as the pipe advances.

In testimony whereof I have signed my pered end having radially-adjustable dies name to this specification in the presence of two subscribing witnesses.

SAMUEL Witnesses:

LESTER M. MILLER, N. E. RHODES.

M. SCHM-ELTZER. 

